helper.addValue(2);
    assertThat(helper.toString()).isEqualTo(expected2);
  }

  @GwtIncompatible // Class names are obfuscated in GWT
  public void testToString_addValue() {
    String toTest =
        MoreObjects.toStringHelper(new TestClass())
            .add("field1", 1)
            .addValue("value1")
            .add("field2", "value2")
            .addValue(2)